ELKHART — Focus brought a medal and an American record to Elkhart's Dalton Herendeen.

Competing in the 2014 Pan Pacific Para-Swimming Championships Aug. 6-10 in Pasadena, Calif., Heredeen broke his own American mark in the 100 breastroke. He set the new mark at 1:16.28 in the preliminaries and lowered it again with a 1:16.11 in the finals. The latter time was good for a silver medal in the SB8 event, second only to Australia's Timothy Disken at 1:15.23.

"I was training hard and hard work pays off," says Herendeen, 21. "I had focused on the breaststroke all summer. That's probably my best choice of making Rio."

Also at the Para Pan Pacs in Pasadena, Herendeen competed in a number of other events. He swam the butterfly leg of the 400 medley relay, helping the Americans to a time of 4:27.22 and a second-place finish.

The 6-foot-4 athlete also medaled in the S10 400 freestyle with a third-place finish (4:20.75), while also finishing sixth in the SM10 200 individual medley (2:18.53) and seventh in the S10 100 backstroke (1:18.61).